Please . . . Help! Haven’t knitted on a diagonal before and looking at my progress on the back of this perfectly darling pink vest, I don’t think I’m doing very well. Gauge: Brunswick Windrush worsted weight.
6sts x 6 rows gst = 1″ square inch.
86 sts. on needle = 14″ across
Dec side 8-1/2″ to starting tail. Inc. side 9 1/2 “.
Planned dimensions 14″wide x 15.5″ long w/a 6.25″ armhole. Followed directions starting our with the original 3 sts. and progressing to 14″ of stitches on the needle (86sts). For a rectangular piece of work I started to dec on one side and increase on the other, according to the two rows given at the end of the ‘back’ instructions. So this piece of work is somewhat trianglar in shape now.

Am I on the right track? I have 1″ Dec one side and 1″ Inc on the right. I don’t understand how this will turn into a rectangle. Can you sketch what I’ve knitted to show that? Where do I start in order to measure the back’s width and length. I hate to spend time continuing to work on it if I have to unravel. Also, I noted a correction in the postings above – that appears to be at the very beginning. Can I compensate? Thank you for your help